/*
* Conditions Of Use 
* 
* This software was developed by employees of the National Institute of
* Standards and Technology (NIST), an agency of the Federal Government.
* Pursuant to title 15 Untied States Code Section 105, works of NIST
* employees are not subject to copyright protection in the United States
* and are considered to be in the public domain.  As a result, a formal
* license is not needed to use the software.
* 
* This software is provided by NIST as a service and is expressly
* provided "AS IS."  NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED
* OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT
* AND DATA ACCURACY.  NIST does not warrant or make any representations
* regarding the use of the software or the results thereof, including but
* not limited to the correctness, accuracy, reliability or usefulness of
* the software.
* 
* Permission to use this software is contingent upon your acceptance
* of the terms of this agreement
*  
* .
* 
*/
/*******************************************************************************
* Product of NIST/ITL Advanced Networking Technologies Division (ANTD).        *
*******************************************************************************/
package gov.nist.javax.sip.header;

import java.util.*;
import java.text.ParseException;
import javax.sip.header.*;

/**
 * List of ALLOW headers. The sip message can have multiple Allow headers
 *
 * @author M. Ranganathan  <br/>
 * @version 1.2 $Revision: 1.6 $ $Date: 2007/10/26 03:53:16 $
 * @since 1.1
 *
 */
public class AllowList extends SIPHeaderList<Allow> {

	
	/**
	 * Comment for <code>serialVersionUID</code>
	 */
	private static final long serialVersionUID = -4699795429662562358L;
	
	
	public Object clone() {
		AllowList retval = new AllowList();
		retval.clonehlist(this.hlist);
		return retval;
	}
	
	
	/** default constructor
	 */
	public AllowList() {
		super(Allow.class, AllowHeader.NAME);
	}

	/**
	 * Gets an Iterator of all the methods of the AllowHeader. Returns an empty
	 *
	 * Iterator if no methods are defined in this Allow Header.
	 *
	 *
	 *
	 * @return Iterator of String objects each identifing the methods of
	 *
	 * AllowHeader.
	 *
	 *
	 */
	public ListIterator<String> getMethods() {
		
		LinkedList<String> ll = new LinkedList<String> ();
		
		for ( Iterator<Allow> it = this.hlist.iterator(); it.hasNext();) {
			Allow a = (Allow)it.next();
			ll.add(a.getMethod());
		}
		
		return ll.listIterator();
	}

	/**
	 * Sets the methods supported defined by this AllowHeader.
	 *
	 *
	 *
	 * @param methods - the Iterator of Strings defining the methods supported
	 *
	 * in this AllowHeader
	 *
	 * @throws ParseException which signals that an error has been reached
	 *
	 * unexpectedly while parsing the Strings defining the methods supported.
	 *
	 *
	 */
	public void setMethods(List<String> methods) throws ParseException {
		ListIterator<String> it = methods.listIterator();
		while (it.hasNext()) {
			Allow allow = new Allow();
			allow.setMethod((String) it.next());
			this.add(allow);
		}
	}
}
